A discours of the variation of the cumpas, or magneticall needle
Subtitle: Wherin is mathematically shewed, the maner of the obseruation, effectes, and application thereof
By: made by W.B. And is to be annexed to The newe attractiue of R.N.
Contributors: Norman, Robert, active 1590
Publisher: Imprinted at London for Richard Ballard, and are to be solde at his shop at Sainct Magnus cornar in Themes streate
Published: 1581
Place of publication: [London]
Language: eng
Number of pages: 60
Subjects: Nautical astronomy; Compass
Other titles: Discovrs of the variation of the cumpas.
Notes: Title within border.

Place of publication and printer's name from colophon.

Printed by J. Kyngston. cf. Brit. mus. Catalogue.

Preface signed: Vvilliam Borough.

Signatures: *⁴ A² B-G⁴

Issued to accompany: Robert Norman, The newe attractiue containing a short discourse of the magnes ... London, 1581.

Cf. Adams & Waters.  English Maritime books, 2701.

European Americana 581/6.

STC (2nd ed.) 3389.

STC (2nd ed.) 18647.

John Carter Brown Library copy acquired with the assistance of the Brewington, Wormser, and Harper Funds.

John Carter Brown Library copy bound in contemporary vellum.